Geographical constraints are stronger than invasion patterns for European urban floras.

Understanding the mechanisms that affect invasion success of alien species is an important prerequisite for the effective management of present and future aliens. To gain insight into this matter we asked the following questions: Are the geographical patterns of species distributions in urban floras...

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Main Authors: Carlo Ricotta, Laura Celesti-Grapow, Ingolf Kühn, Gillian Rapson, Petr Pyšek, Frank A La Sorte, Ken Thompson
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2014-01-01
Series:PLoS ONE
Online Access:http://europepmc.org/articles/PMC3899062?pdf=render
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author Carlo Ricotta
Laura Celesti-Grapow
Ingolf Kühn
Gillian Rapson
Petr Pyšek
Frank A La Sorte
Ken Thompson
author_facet Carlo Ricotta
Laura Celesti-Grapow
Ingolf Kühn
Gillian Rapson
Petr Pyšek
Frank A La Sorte
Ken Thompson
author_sort Carlo Ricotta
collection DOAJ
description Understanding the mechanisms that affect invasion success of alien species is an important prerequisite for the effective management of present and future aliens. To gain insight into this matter we asked the following questions: Are the geographical patterns of species distributions in urban floras different for native compared with alien plant species? Does the introduction of alien species contribute to the homogenization of urban floras? We used a Mantel test on Jaccard dissimilarity matrices of 30 urban floras across the British Isles, Italy and central Europe to compare the spatial distribution of native species with four classes of alien species: archaeophytes, all neophytes, non-invasive neophytes, and invasive neophytes. Archaeophytes and neophytes are species that were introduced into Europe before and after 1500 AD, respectively. To analyze the homogenizing effect of alien species on the native urban floras, we tested for differences in the average dissimilarity of individual cities from their group centroid in ordination space. Our results show that the compositional patterns of native and alien species seem to respond to the same environmental drivers, such that all four classes of alien species were significantly related to native species across urban floras. In this framework, alien species may have an impact on biogeographic patterns of urban floras in ways that reflect their history of introduction and expansion: archaeophytes and invasive neophytes tended to homogenize, while non-invasive neophytes tended to differentiate urban floras.
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spelling doaj.art-5c5bdd020e07428ca75b4cdc7b7325cb2022-12-21T20:31:39ZengPublic Library of Science (PLoS)PLoS ONE1932-62032014-01-0191e8566110.1371/journal.pone.0085661Geographical constraints are stronger than invasion patterns for European urban floras.Carlo RicottaLaura Celesti-GrapowIngolf KühnGillian RapsonPetr PyšekFrank A La SorteKen ThompsonUnderstanding the mechanisms that affect invasion success of alien species is an important prerequisite for the effective management of present and future aliens. To gain insight into this matter we asked the following questions: Are the geographical patterns of species distributions in urban floras different for native compared with alien plant species? Does the introduction of alien species contribute to the homogenization of urban floras? We used a Mantel test on Jaccard dissimilarity matrices of 30 urban floras across the British Isles, Italy and central Europe to compare the spatial distribution of native species with four classes of alien species: archaeophytes, all neophytes, non-invasive neophytes, and invasive neophytes. Archaeophytes and neophytes are species that were introduced into Europe before and after 1500 AD, respectively. To analyze the homogenizing effect of alien species on the native urban floras, we tested for differences in the average dissimilarity of individual cities from their group centroid in ordination space. Our results show that the compositional patterns of native and alien species seem to respond to the same environmental drivers, such that all four classes of alien species were significantly related to native species across urban floras. In this framework, alien species may have an impact on biogeographic patterns of urban floras in ways that reflect their history of introduction and expansion: archaeophytes and invasive neophytes tended to homogenize, while non-invasive neophytes tended to differentiate urban floras.http://europepmc.org/articles/PMC3899062?pdf=render
spellingShingle Carlo Ricotta
Laura Celesti-Grapow
Ingolf Kühn
Gillian Rapson
Petr Pyšek
Frank A La Sorte
Ken Thompson
Geographical constraints are stronger than invasion patterns for European urban floras.
PLoS ONE
title Geographical constraints are stronger than invasion patterns for European urban floras.
title_full Geographical constraints are stronger than invasion patterns for European urban floras.
title_fullStr Geographical constraints are stronger than invasion patterns for European urban floras.
title_full_unstemmed Geographical constraints are stronger than invasion patterns for European urban floras.
title_short Geographical constraints are stronger than invasion patterns for European urban floras.
title_sort geographical constraints are stronger than invasion patterns for european urban floras
url http://europepmc.org/articles/PMC3899062?pdf=render
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